Automatic Driving Control System for Safe Handover
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Solution Overview
Problem
Drivers may feel disoriented due to sudden release of automatic driving control and braking in automatic driving mode, as they may not recognize the restart of the vehicle after stopping, leading to potential collisions and confusion.
Innovation Solution
A vehicle system that includes sensors to detect surroundings and a controller to determine if there is a possibility of an accident based on distance to a front vehicle, road inclination, and user input, applying an electronic parking brake and releasing automatic driving control when necessary to ensure safe handover of control to the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automatic driving control system releases control after stopping to prevent collisions, then safety is improved, but the driver may feel disoriented and confused due to sudden braking and control release
Solution Approach 1:
The system performs preliminary detection of driver state and surrounding environment before releasing automatic driving control. The controller evaluates whether the driver is ready to take control by monitoring inputs such as steering wheel rotation, accelerator/brake pedal manipulation, or switch operations. This preliminary assessment ensures the driver is alert and prepared before control transition, preventing sudden disorientation while maintaining safety.
Solution Approach 2:
The system continuously monitors driver inputs and vehicle status to provide feedback for smooth control transition. When the driver manipulates controls (steering wheel, pedals, or switches), the system detects these inputs and uses them as feedback signals to gradually transfer control from automatic to manual mode. This feedback mechanism ensures the driver remains aware of vehicle status during transition, improving both safety and comfort.
2Reliability
If the system applies electronic parking brake to prevent accidents when control is released, then collision prevention is improved, but the driver may not recognize the brake application and feel confused
Solution Approach 1:
The system provides preliminary notification to the driver before applying the electronic parking brake. When the controller determines that control release is necessary for safety reasons, it first alerts the driver through visual, auditory, or haptic signals. This preliminary warning ensures the driver is informed of the upcoming brake application, maintaining awareness while still enabling automatic collision prevention.
Solution Approach 2:
The system uses driver responses as feedback to determine whether to proceed with brake application. If the driver acknowledges the notification or takes corrective action (such as manipulating controls to indicate awareness), the system adjusts its brake application strategy. This feedback loop ensures the driver remains informed and engaged, reducing confusion while maintaining safety.
3Reliability
If the vehicle stops in automatic driving mode to prevent collisions, then safety is improved, but the driver may not recognize the stop and manipulate controls late causing confusion
Solution Approach 1:
The system performs preliminary detection of stopping conditions and driver state before actually stopping the vehicle. The controller monitors environmental sensors and driver inputs to assess whether a stop is necessary and whether the driver is ready to take control. This preliminary assessment allows the system to stop in advance of actual collision risk while ensuring the driver is prepared, improving safety without causing delays.
Solution Approach 2:
The system continuously monitors driver responses as feedback during the stopping process. When the vehicle approaches a stop condition, the system detects driver inputs (such as steering wheel manipulation or pedal pressure) and uses this feedback to adjust the stopping timing and manner. This real-time feedback ensures the driver remains aware of the stopping action and can respond appropriately, preventing both premature and delayed reactions.
Data Source
AI summary
A vehicle has an automatic driving control system which includes: a sensor configured to detect surroundings of the vehicle; and a controller configured to control automatic driving of the vehicle based on information obtained by the sensor, upon reception of a command for automatic driving from a user. The controller is further configured to determine whether there is possibility of accident based on a distance to a front vehicle and whether the user manipulates an input, and to release the automatic driving control of the vehicle based on the determination, when the vehicle is stopped in an automatic driving mode.